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<FONT color="green">001</FONT>    package org.hackystat.telemetry.analyzer.evaluator;<a name="line.1"></a>
<FONT color="green">002</FONT>    <a name="line.2"></a>
<FONT color="green">003</FONT>    import junit.framework.TestCase;<a name="line.3"></a>
<FONT color="green">004</FONT>    <a name="line.4"></a>
<FONT color="green">005</FONT>    import org.hackystat.telemetry.analyzer.language.ast.Expression;<a name="line.5"></a>
<FONT color="green">006</FONT>    import org.hackystat.telemetry.analyzer.language.ast.TelemetryStreamsDefinition;<a name="line.6"></a>
<FONT color="green">007</FONT>    import org.hackystat.telemetry.analyzer.language.parser.TelemetryLanguageParser;<a name="line.7"></a>
<FONT color="green">008</FONT>    <a name="line.8"></a>
<FONT color="green">009</FONT>    /**<a name="line.9"></a>
<FONT color="green">010</FONT>     * Test suite for &lt;code&gt;TelemetryExpressionEvaluator&lt;/code&gt;.<a name="line.10"></a>
<FONT color="green">011</FONT>     * <a name="line.11"></a>
<FONT color="green">012</FONT>     * @author (Cedric) Qin Zhang<a name="line.12"></a>
<FONT color="green">013</FONT>     */<a name="line.13"></a>
<FONT color="green">014</FONT>    public class TestTelemetryExpressionEvaluator extends TestCase {<a name="line.14"></a>
<FONT color="green">015</FONT>    <a name="line.15"></a>
<FONT color="green">016</FONT>      /**<a name="line.16"></a>
<FONT color="green">017</FONT>       * Expressions containing constants only, so it can be evaluated without<a name="line.17"></a>
<FONT color="green">018</FONT>       * sensor data.<a name="line.18"></a>
<FONT color="green">019</FONT>       */<a name="line.19"></a>
<FONT color="green">020</FONT>      private String[] expressions = new String[] {"10", "22", "2", "0-2", "11+22", "11-22", "11*22",<a name="line.20"></a>
<FONT color="green">021</FONT>          "11/22", "11 + 10 * 20", "10 / (10 + 90)", "1 - ( 10 - (1+(2-3)*4) / (1 + 2 * 3) )",<a name="line.21"></a>
<FONT color="green">022</FONT>          "1-2-3", "1/2/4"<a name="line.22"></a>
<FONT color="green">023</FONT>      };<a name="line.23"></a>
<FONT color="green">024</FONT>      <a name="line.24"></a>
<FONT color="green">025</FONT>      /** Expected result of evaluation, must be of the same length as formulae. */<a name="line.25"></a>
<FONT color="green">026</FONT>      private double[] expectedResults = new double[] {10, 22, 2, -2, 33, -11, 242, 0.5, 211, 0.1,<a name="line.26"></a>
<FONT color="green">027</FONT>          -9.4285714285714285714285714285714, -4, 0.125};<a name="line.27"></a>
<FONT color="green">028</FONT>    <a name="line.28"></a>
<FONT color="green">029</FONT>      /**<a name="line.29"></a>
<FONT color="green">030</FONT>       * Tests &lt;code&gt;evaluateImpl&lt;/code&gt; with constants only.<a name="line.30"></a>
<FONT color="green">031</FONT>       * <a name="line.31"></a>
<FONT color="green">032</FONT>       * @throws Exception If test fails.<a name="line.32"></a>
<FONT color="green">033</FONT>       */<a name="line.33"></a>
<FONT color="green">034</FONT>      public void testEvaluatorWithConstants() throws Exception {<a name="line.34"></a>
<FONT color="green">035</FONT>        for (int i = 0; i &lt; this.expressions.length; i++) {<a name="line.35"></a>
<FONT color="green">036</FONT>          // constructs a query contains all the formulae listed above.<a name="line.36"></a>
<FONT color="green">037</FONT>          StringBuffer buffer = new StringBuffer(512);<a name="line.37"></a>
<FONT color="green">038</FONT>          buffer.append("streams StreamForUnitTest() = { \"desc\", ");<a name="line.38"></a>
<FONT color="green">039</FONT>          buffer.append(expressions[i]);<a name="line.39"></a>
<FONT color="green">040</FONT>          buffer.append("};");<a name="line.40"></a>
<FONT color="green">041</FONT>          // parse to generate TelemetryStreamsDef<a name="line.41"></a>
<FONT color="green">042</FONT>          TelemetryStreamsDefinition streamsDef = TelemetryLanguageParser.parseStreamsDef(buffer<a name="line.42"></a>
<FONT color="green">043</FONT>              .toString());<a name="line.43"></a>
<FONT color="green">044</FONT>          Expression expression = streamsDef.getExpression();<a name="line.44"></a>
<FONT color="green">045</FONT>          // evaluation the expression<a name="line.45"></a>
<FONT color="green">046</FONT>          Object result = <a name="line.46"></a>
<FONT color="green">047</FONT>            TelemetryEvaluator.resolveExpression(expression, null, null, null, null);<a name="line.47"></a>
<FONT color="green">048</FONT>          // check with expected result<a name="line.48"></a>
<FONT color="green">049</FONT>          Number expected = new Double(this.expectedResults[i]);<a name="line.49"></a>
<FONT color="green">050</FONT>          assertEquals(expected.doubleValue(), ((Number) result).doubleValue(), 0.00001);<a name="line.50"></a>
<FONT color="green">051</FONT>        }<a name="line.51"></a>
<FONT color="green">052</FONT>      }<a name="line.52"></a>
<FONT color="green">053</FONT>    }<a name="line.53"></a>




























































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